Lou Clark has a lot of questions. Like how she's ended up working in an airport bar. Why the flat she's owned for a year still doesn't feel like home. Whether her family can forgive her for what she did eighteen months ago. What Lou does know is that something has to change . . . Then, one night, it does. But does the stranger on her doorstep hold the answers Lou is searching for - or just more questions? Close the door and life continues: simple, ordered, safe. Open it and she risks everything. But Lou once made a promise to live. And if she's going to keep it, she has to invite them in . . .